app.js

require('dotenv').config()
const express = require('express')
const mongoose = require('mongoose')
const ShortUrl = require('./models/ShortUrl')
const app = express();

mongoose.connect(process.env.MONGODB_URI || 'mongodb://localhost:27017/urlShortener', {
  useNewUrlParser: true, useUnifiedTopology: true
})

app.set('view engine', 'ejs')
app.use(express.urlencoded({ extended: false }))

app.use(express.static("public"));

app.get('/', async (req, res) => {
  const shortUrls = await ShortUrl.find()
  res.render('index', { shortUrls: shortUrls })
})

app.post('/shortUrls', async (req, res) => {
  await ShortUrl.create({ full: req.body.fullUrl })

  res.redirect('/')
})

app.get('/:shortUrl', async (req, res) => {
  const shortUrl = await ShortUrl.findOne({ short: req.params.shortUrl })
  if (shortUrl == null) return res.sendStatus(404)

  shortUrl.clicks++
  shortUrl.save()

  res.redirect(shortUrl.full)
})

let port = process.env.PORT || 3000;
if (port == null || port == "") {
  port = 8000;
}


app.listen(port, () => {
    console.log(`App is running at ${port}`);

});